Novel S-scheme based nanocomposite of MXene/V 2 O 5 for environmental remediation towards sustainable development: An insight into influencing parameters

Abstract
In this study, a novel 2D/2D nanocomposite of MXene and V 2 O 5 was synthesized using a facile hydrothermal approach for the efficient removal of crystal violet (CV), a textile dye from contaminated water to achieve Sustainable Development Goal (SDG) 14; “Save Lives Below Water”. Here, the catalytic performance of pristine MXene was prominently boosted with the introduction of ball milled V 2 . O 5 as an electron generating agent. The degradation efficiency of synthesized nanocomposite significantly enhanced from 57 % to 92 %, 41 % – 76 % and 7 % – 58 % with an error of ±2 % as compared to pristine MXene at 10, 20 and 30 ppm concentrations of CV, respectively. The effective degradation of pollutants is ascribed to the electron-transfer via S-scheme based mechanism and helps in reducing recombination rate of photogenerated carriers, which could produce hydroxyl radicals (OH ) as a primary species for effectively degradation of pollutants.
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